微弱信号检测的实验研究  

Etpeimental Research of Weak Signal Detection

作　　者：王月新[1] 王清亮[1] 任恒峰[1] 郭红英[1] 

机构地区：[1]忻州师范学院电子系,山西忻州034000

出　　处：《山西大同大学学报（自然科学版）》2016年第2期34-37,共4页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：忻州师范学院基金项目[JGYB201529]

摘　　要：以相关检测原理为基础,利用微弱信号检测综合实验装置,实现对已知微弱信号的检测。首先,测出该微弱信号在没有噪声时相关检测直流输出实验数据,并以此作为存在噪声时微弱信号检测的标度;分别在两种不同的噪声环境中混入该微弱信号,记录此时相关器的直流电压输出数据;与前面的标度数据进行对比分析,可以证明在噪声中存在已知的微弱信号。进而,为已知微弱信号的检测提供一套切实可行的方法。Based on correlation detection principle,using the integrated experimental device of weak signal detection,we detected the known weak signal.First of all,we detected the DC output experimental data which could be used as the scale of weak signal detection in the presence of noise.Next,we mixed the weak signal into two different noise environments,recorded the DC voltage output data at this time,compared and analyzed the data with the scale.Finally,it can be proved that the known weak signal is swallowed into the noise.Furthermore,provide a practical method for the detection of known weak signal.

关 键 词：相关器 示波器 相关原理 

分 类 号：TN911.23[电子电信—通信与信息系统]